Cartridge-shell



(No Model.)

G. W. JACKSON.

CARTRIDGE SHELL. No. 890,082. Patented Sept. 25, 1888.

Uriiisn SrArEs PA ENT Grates,

GEORGE XV. JACKSON, OF PHILADELPHIA, PENNSYLVANIA.

CARTRI DEE-SHELL :BPECIPIC'A'IION forming part. of Letters Patent No. 390,082, dated September 25, 1888.

I Application filed April 9,1888. Serial K017051131. (No model.)

To aZZ whom it may concern.-

marked thereon, which form a part of this specification.

This invention consists of a nonmetallie cartridge-shell having a detachable metal breech.

The object of my invention is that the metal cap which forms the breech can be retained and used any number of times, as well as to improve the shooting qualities of non-metallic shells, all of which I will now proceed to describe.

Ol'theaceompanying drawings,f orming part of this specification, Figure 1 represents a sectional side view of my improved shell. Fig. 2 represents a flanged metal cap. Fig. 8 represents a light inetal ring corrugated to form a thread. Fig. 4 represents a complete shell.

In carrying out my invention 1 take thetube A, made of paper or like material, crimping the end 13. Then I insert the threaded ring 0 into tube A againstthe crimped end B. Then, with a creaser made for the purpose, turned over the end I) of tube A, containing the threaded ring O,it is foreedinto the groovesE of the ring G, l'orming the thread F on the end of tube A. larH of which is corrugated to form a thread to correspond with thread on the end D of tube A, and screw it on over the threaded end D of tube A, forcing the tube tightlyinto the grooves of the collar H and ring 0 and drawing the criinped end B and cap G together, thereby forming a non-metallic shell with a perfcctlytight metal breech. The ring C,being 1 then take the cap G,the colmade of light metal-such as tin or brass-will expand somewhat when the explosion takes I place, thereby making it impossible for the gases to escape through the breech.

. The notches I in the flange of cap G are for inserting a key or wrench,whe11necessary,i'or

tightening or loosening the cap. The flanged edge J,being milled also,enables the cap. to be turned on and off without a key or wrench, if

properly made. The'eollar H of the cap G and the ring (3, having a corrugated thread, allows them to be made of lighter n gtaiap d hayethe required streogthjn d also prevents the collar H of the cap G from sticking in the breech oi gun-barrel if dirty.

I am aware that I can use a solid breech made of any suitable material threaded on the'side; but I prefer the ring, as it would be necessary to have the solid breech and'cap drawn tightly together, while with the ring it is only necessary that the cap should catch several threads of the ring.

A non-metallic tube with one end erimped over a corrugated metal ring inserted into said end of the tube, the end of the tube forced into the grooves of the ring, which forrnsa thread on the end of the tube, a solid flanged cap notched and milled on the edge of the flange, the collar of said cap being corrugated to form a thread to correspond with the thread on the end of the tube, so that it can be screwed on over said threaded end of the tube, forcing it into the grooves of the metal ring, thereby forming a nonmetallic shell with a-perfectlytight metal breech, which can be detached when the tube becomes useless and reused any number of times, as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE W. eAoKshN.

I \Vitnesses:

F. A. SMITH, J AS. BHWEBB, 

